In /etc/ssh/ssh_config write:
Host *
GSSAPIAuthentication yes
# KexAlgorithms=diffie-hellman-group14-sha1
KexAlgorithms=curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
It works for me.